Bottle-stopper



(No Model.)

G. H. OLIVER & E. L. BROOKS.

' BOTTLE STOPPER.

No. 429,579. Patented June 3, 1890.

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UNITED STATES PATENT OFFICE.

GARRITT I-I. OLIVER AND ED'lVARD L. BROOKS, OF CHICAGO, ILLINOIS,

ASSIGNORS OF ONE-FOURTH TO ROBERT S. HOBBS, OF BROOKLYN,

NEW YORK.

BOTTLE-STOPPER.

SPECIFICATION forming part of Letters Patent No. 429,579, dated June 3, 1890.

Application filed March 17, 1890. Serial No. 344,427. (No model.)

To all whom it may concern:

Be it known that we, GARRITT H. OLIVER and EDWARD L. BROOKS, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have jointly invented certain new and useful Improvements in Self-Adjusting Bottle-Stoppers; and We do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and in which Figure 1 is a vertical axial section of a stopper embodying. our present improvements, the parts being shown in their normal expanded condition; Fig. 2, a side elevation, partly sectionized, of the same in a diametrically-contracted condition, showing a slightlymodified arrangement of the circular stiffening-rings of the present improvement; Fig. 3, a similar view illustrating another modified form of our present improvement.

Similar letters of reference indicate like parts in the several views.

The present invention relates to that form of self-adjusting bottle-stoppers in which a seamless elastic bulb or bag is adapted to expand within the mouth of the bottle, the adjustment of the bulb being attained by its own elasticity, while its adjustment is effected by a longitudinally-moving plunger within the bulb, which on being pressed down elongates the bulb and decreases the diameter to fit the required size of bottle-neck,

and when released allows the bulb to expand to form a tight and effective closure of the bottleneck. Such stoppers as formerly constructed were defective in the one pointto wit, the liability'of the comparatively thin narrow-necked bottle.

tially-arranged rings or enlargements a, of some thickness and rigidity, integral with the body of the bulb A, as shown, the action of which is to circularly stiffen the walls of the bulb and prevent the same from becoming creased or folded as it expands into a The rings or enlargements a may be arranged on theinterior of the bulb, as indicated in Fig. 1, or partly on the interior and partly on the exterior of the bulb, as indicated in Fig. 2, or wholly on the exterior, as indicated in Fig. 3, without departing from the spirit of this part of our invention.

The second part of our present improvement consists in the employment of a cap B, of metal or other suitable material, for more effectively attaching the mouth of the elastic bulb A to the rigid guide-core O at the mouth of the bulb, that forms a guide for the longitudinally-moving plunger D, the cap being secured in place by being pressed in against the bulb-neck immediately beneath the lower rim of the core-piece, as shown, and in addition to forming a means of at tachment for the parts said cap also acts to protect and shield the top of the bulb from damage, &c.

c Ve are aware that prior to our invention expanding bottle-stoppers have been constructed with heavy thick walls upon which were formed acircumferential bead or beads ing, in combination, an elastic bulb A, a core In testimony whereof Witness our hands C in the mouth of the same, a cap B, the lower this 14th day of March, 1890.

edge of which is pressed in against the bulb- GARRITT II. OLIVER. neck immediately beneath the lower rim of EDVARD L. BROOKS. the core-piece to secure the bulb to the core, In presence of and a, longitudinally-moving plunger D, es- ROBERT BURNS,

sentially as herein set forth. PETER P. DYER. 

